Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Sample Type Blood (1) Test Area Exposure (1) Test Category Acids (5) Alcohols (3) Antianxiety (3) Antidepressants (5) (-) Gases (1) Hydrocarbons (1) Metals/Elements (8) Sedative/Hypnotics (5) Solvents (2) Volatiles (10) Test Sub-Category Hydrocarbons (1) Test Test Name 2745B Methane, Blood